layui.use(['upload', 'element', 'layer'], function() {
    var $ = layui.jquery
        , upload = layui.upload
        , element = layui.element
        , layer = layui.layer;

    var result = ctx+"/images/test.png";

    //普通图片上传
    upload.render({
        elem: '#test1'
        ,url: ctx+'test/uploadImage'
        ,before: function(obj){
            //预读本地文件示例，不支持ie8
            obj.preview(function(index, file, result){
                $('#demo1').attr('src', result); //图片链接（base64）
            });
        }
        ,done: function(res){
            //如果上传失败
            if(res.code == 200){
                return layer.msg('上传成功',{icon:1,time:1500});
            }else{
                return layer.msg('上传失败',{icon:5,time:1500});
            }

        }
        ,error: function(){
            //演示失败状态，并实现重传
            var demoText = $('#demoText');
            demoText.html('<span style="color: #FF5722;">上传失败</span> <a class="layui-btn layui-btn-xs demo-reload">重试</a>');
            demoText.find('.demo-reload').on('click', function(){
                uploadInst.upload();
            });
        }
    });




})